3x3 matrix
What help do you need? Do you know mathematically how to calculate the determinate of a 3x3 matrix by using determinates of associated 2x2 matrices? Can you define a 3x3 matrix in the program and populate it from data entered by the user? Can you obtain the required 2x2 matrices from the entered 3x3 matrix in the program? Given a 2x2 matrix, can you write the code to determine the determinant? Have you designed the program specifying required functions, algorithms etc etc?
Post your current code.
Post your current code.
a11 ( a22 a33 - a23 a32 ) + a12 ( a23 a31 - a21 a33 ) + a13 ( a21 a32 - a22 a31 )
(Expansion by cyclic permutation because it's easier to check. Alternative approach reverses the outside sign of the middle term and flips the terms in the bracket.)
Watch out for zero-based arrays in c++!
(Expansion by cyclic permutation because it's easier to check. Alternative approach reverses the outside sign of the middle term and flips the terms in the bracket.)
Watch out for zero-based arrays in c++!
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